Home / 780,017.60-1,170,139.80-330,737.60

Finding the Fourth Proportional to 780,017.60, 1,170,139.80 and 330,737.60

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Solution

The fourth proportional to 780,017.60, 1,170,139.80 and 330,737.60 is: 496,154.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,017.60 : 1,170,139.80 = 330,737.60 : x
  2. Step 2: Convert to fraction form
    780,017.60/1,170,139.80 = 330,737.60/x
  3. Step 3: Cross multiply
    780,017.60x = 1,170,139.80 × 330,737.60
  4. Step 4: Simplify right side
    780,017.60x = 387,009,229,116.48
  5. Step 5: Solve for x
    x = 387,009,229,116.48/780,017.60
  6. Step 6: Final answer
    x = 496,154.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.